Sony FE 40mm F2.5 GvsTamron 17-70mm F/2.8 Di III-A VC RXD
FE 40mm F2.5 G
40mm / F2.5
—
17-70mm F/2.8 Di III-A VC RXD
17-70mm / F2.8
26-105mm equiv.
—
Which to choose
When the FE 40mm F2.5 G suits you better
- Brightness0.3 stops brighter — better in low light and blurs the background more
- Weight352g lighter, so easier to carry
When the 17-70mm F/2.8 Di III-A VC RXD suits you better
- Close focusFocuses as close as 19cm
- Zoom rangeCovers 17-70mm in a single lens
- StabilizationHas stabilization
These points are derived mechanically from the numbers. How a lens actually renders does not show up in specifications, so look at samples before deciding.
Size compared
- FE 40mm F2.5 G45mm long × 68mm diameter
- 17-70mm F/2.8 Di III-A VC RXD119.3mm long × 74.6mm diameter
Specifications compared
| Specification | Sony FE 40mm F2.5 G | Tamron 17-70mm F/2.8 Di III-A VC RXD | Difference |
|---|---|---|---|
| Focal length (wide) | 40mm | 17mm | +23mm |
| Focal length (tele) | 40mm | 70mm | −30mm |
| Max aperture (wide) | F2.5 | F2.8 | 0.3 stops brighter |
| Max aperture (tele) | F2.5 | F2.8 | 0.3 stops brighter |
| Min aperture | F22 | F22 | — |
| Min focus distance | 28cm | 19cm | +0.09m |
| Max magnification | 0.20× | 0.21× | −0.01x |
| Aperture blades | 7blades | 9blades | −2blades |
| Weight | 173g | 525g | −352g |
| Length | 45mm | 119.3mm | −74.3mm |
| Diameter | 68mm | 74.6mm | −6.6mm |
| Filter size | 49mm | 67mm | −18mm |
| Released | 2021 | 2021 | — |
| Stabilization | No | Yes | No |
| Weather sealing | Yes | Yes | — |
| Macro | No | No | — |
| Autofocus | Yes | Yes | — |
The difference column reads as FE 40mm F2.5 G relative to 17-70mm F/2.8 Di III-A VC RXD.The highlighted cell is the better side for that specification.
Check prices
FE 40mm F2.5 G
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17-70mm F/2.8 Di III-A VC RXD
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FE 40mm F2.5 G in detail17-70mm F/2.8 Di III-A VC RXD in detailAll E-mount lenses